Pinpoint Test DV: Throttle Body Assembly Electronic Throttle Control (Etc): Introduction

WARNING: TO PREVENT THE RISK OF HIGH-VOLTAGE SHOCK, ALWAYS FOLLOW PRECISELY ALL WARNINGS AND SERVICE INSTRUCTIONS, TO DEPOWER THE SYSTEM. THE HIGH-VOLTAGE SYSTEM UTILIZES APPROXIMATELY 300 VOLTS DC, PROVIDED THROUGH HIGH-VOLTAGE CABLES TO ITS COMPONENTS AND MODULES. THE HIGH-VOLTAGE CABLES AND WIRING ARE IDENTIFIED BY ORANGE TAPE OR ORANGE WIRE COVERING. ALL HIGH-VOLTAGE COMPONENTS ARE MARKED WITH HIGH-VOLTAGE WARNING LABELS WITH A HIGH-VOLTAGE SYMBOL. FAILURE TO FOLLOW THESE INSTRUCTIONS MAY RESULT IN SERIOUS PERSONAL INJURY OR DEATH.

WARNING: SUBSTANTIAL OPENING AND CLOSING TORQUE IS APPLIED BY THIS SYSTEM. TO PREVENT INJURY, BE CAREFUL TO KEEP FINGERS AWAY FROM THROTTLE MECHANISM WHEN ACTUATED. FAILURE TO FOLLOW THESE INSTRUCTIONS MAY RESULT IN PERSONAL INJURY.

This pinpoint test is intended to diagnose the following:

electronic throttle body (ETB) (9F991)
electronic throttle body throttle position (TP) sensor (9E928)
harness circuits: ETCRTN, ETCREF, TP1, TP2, TACM+, and TACM-
powertrain control module (PCM) (12A650)

Fig 1: Identifying Electronic Throttle Body Connector Terminals
Courtesy of FORD MOTOR CO.

Pin	Circuit
2	TACM- (Throttle Actuator Control Motor -)
1	TACM+ (Throttle Actuator Control Motor +)
6	TP2 (Throttle Position Sensor 2)
3	TP1 (Throttle Position Sensor 1)
4	ETCRTN (Electronic Throttle Control Return)
5	ETCREF (Electronic Throttle Control Reference Voltage)

Fig 2: Identifying Powertrain Control Module Connector Terminals

Courtesy of FORD MOTOR CO.

Pin	Circuit
E36	TACM- (Throttle Actuator Control Motor -)
E48	TACM+ (Throttle Actuator Control Motor +)
E16	TP2 (Throttle Position Sensor 2)
E27	TP1 (Throttle Position Sensor 1)